You can pay for portfolios from the ECOS crypto wallet. To replenish your wallet, you need to go to the ECOS application, go to the Wallet section and click the Deposit button. After that, a QR code with the address of your ECOS wallet will appear on the screen. Also, the wallet address is spelled out in text format, which can be copied. To this address you need to transfer the amount of BTC you need to make a purchase.